My DH feeds his parents and siblings behaviour. Perhaps that is a harsh thing to say, but that is the conclusion I have come to.
It has been happening for decades now. I met DH at 21, which was quite young, and I have never once seen my PIL or his sibling do anything for him. No parenting, no help finanicially or practically - nothing. On the other hand his sibling has had loads of money given to them, and loads of practical help.
PIL used to drive past our road and go fix up siblings house (no DC) and mow their grass whilst we struggled with young DC. We have had no help with the DC or anything, but of course, we aren't entitled to it.
Even though his sibling is clearly the favourite, they constantly emotionally blackmail my DH. Recently at a family gathering FIL said something in my absence about DH and his sibling, I wasn't there, but when I came back complete strangers where consoling my DH saying "I'm sure he didn't mean it like that and is proud of you, cares about you too". I mean WTF.
They are super rude to me, and have now started being off with my DC. Sibling recently did something that I find quite unforgivable towards my DC and my DH was really annoyed with them. However, then he gets on the phone to them to congratulate them on their 15th Wedding Anniversary as if nothing has happened. Sibling feels very emboldened when sitting there with PIL and knows they will defend them if stood up to.
It seems to me that PIL and my DH's siblings are allowed to treat the people in my family (me, DH, DC) badly and there are no consequences. My family are not perfect but I do call them out instantly and tell them and then that is it. They usually say sorry, and don't do it again.
It seems that I will be waiting for my DH to grow a backbone WRT them. It does affect me and the DC though so "I" need to do something. My DH takes the path of least resistance. He must have sat there and said to himself "They are now targeting my DC with their nonsense and I don't like it, but I better call them and see if they are OK and wish them a happy anniversary or they will be upset and I don't want to cause any trouble".
IRL there is no way I would take this crap off anyone else, and I have held back as I didn't want to upset my DH or didn't want to kick off in front of my DC. However, I can see that my DH has had loads of chances to pull them up and nip it in the bud, didn't, and now we have a situation where they think they can say and do what they like to me, him and my DC.
I don't think I can change my DH, but what can I do? They are not welcome in my house again and I have told DH this, but it is only a matter of time before he caves. I feel I need to do something but not sure what.
AIBU to think DH isn't going to change and that he is actually serving himself up as the main course for their bullying.